KR960006559A - Video / Audio Signal Input Selection Circuit - Google Patents
Video / Audio Signal Input Selection Circuit Download PDFInfo
- Publication number
- KR960006559A KR960006559A KR1019940017826A KR19940017826A KR960006559A KR 960006559 A KR960006559 A KR 960006559A KR 1019940017826 A KR1019940017826 A KR 1019940017826A KR 19940017826 A KR19940017826 A KR 19940017826A KR 960006559 A KR960006559 A KR 960006559A
- Authority
- KR
- South Korea
- Prior art keywords
- video
- audio signal
- signal input
- switching
- signal
- Prior art date
Links
Abstract
본 발명은 비디오 카세트 레코우더(Video Cassette Rercorder) 및 레이져 디스크 플레이어(Lazer Disc Player) 등을 연결하여 사용하는 텔레비젼 수상기(Television Receiver)에 관한 것으로서, 더욱 상세하게는 텔레비젼 수상기에 유입되는 비디오/오디오 신호(Video/Audio Signal)의 입력잭(Input Jack)의 삽입상태를 판단하여 비디오/오디오 신호 입력을 화면과 스피커로 선택적으로 출력시킬 수 있도록 한 비디오/오디오 신호 선택 회로에 관한 것으로, 종래에는 텔레비젼 수상기의 비디오/오디오 신호 입력잭에 외부기기의 비디오/오디오 신호 출력 플러그가 오삽입되면 화면과 스피커로 잡음이 출력되는 문제점이 있었다. 본 발명은 예시도면 제2도에서와 같이 TV/VCR 절환용 스위칭 IC(14)(28)를 통하여 입력되는 비디오/오디오신호를 동기신호 검출부(16)의 동기신호 검출상태를 인식한 마이콤(20)의 제어로 스위칭 IC(30)를 스위칭 동작시켜 화면(18)과 스피커(36)로 선택적으로 출력시킬 수 있도록 된 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver used by connecting a video cassette recorder and a laser disc player, and more particularly, video / audio flowing into a television receiver. The present invention relates to a video / audio signal selection circuit for judging an insertion state of an input jack of a video / audio signal and selectively outputting a video / audio signal input to a screen and a speaker. When a video / audio signal output plug of an external device is inserted into a video / audio signal input jack of a receiver, noise is output to a screen and a speaker. According to the present invention, as shown in FIG. 2, the microcomputer 20 that recognizes the sync signal detection state of the sync signal detector 16 is a video / audio signal input through the switching ICs 14 and 28 for TV / VCR switching. By switching the switching IC (30) by the control of) to be selectively output to the screen 18 and the speaker 36.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940017826A KR960006559A (en) | 1994-07-23 | 1994-07-23 | Video / Audio Signal Input Selection Circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940017826A KR960006559A (en) | 1994-07-23 | 1994-07-23 | Video / Audio Signal Input Selection Circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
KR960006559A true KR960006559A (en) | 1996-02-23 |
Family
ID=66689501
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019940017826A KR960006559A (en) | 1994-07-23 | 1994-07-23 | Video / Audio Signal Input Selection Circuit |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR960006559A (en) |
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1994
- 1994-07-23 KR KR1019940017826A patent/KR960006559A/en active IP Right Grant
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A201 | Request for examination | ||
E701 | Decision to grant or registration of patent right | ||
NORF | Unpaid initial registration fee |